| Levels by age groups | First Trimester (12 weeks of gestation) | Third Trimester (37 - 40 weeks of gestation) | ||
| Under 25 years | n | % | n | % |
| Mild | 3 | 23 | 6 | 50 |
| Moderate | 10 | 77 | 6 | 50 |
| Summation | 13 | 100 | 12 | 100 |
| 25 to 34 years | n | % | n | % |
| Mild | 14 | 54 | 9 | 41 |
| Moderate | 12 | 46 | 13 | 59 |
| Summation | 26 | 100 | 22 | 100 |
| ≥35 years | n | % | n | % |
| Mild | 4 | 80 | 2 | 40 |
| Moderate | 1 | 20 | 3 | 60 |
| Summation | 5 | 100 | 5 | 100 |
| Total | 44 | 100 | 39 | 100 |